* {
  margin: 0;
  padding: 0;
}

.container {
  width: 100%;
  height: 100vh;
  display:flex;
  flex-container:center;
}

#canvas {
  display:flex;
  flex-container:center;
  position: absolute;
  margin: auto;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}
